<!DOCTYPE html>
  <style>
    .frame{
        position: absolute;
        top: 1000px;
    }
  </style>
  <body>
    <iframe class="frame" id="formPage" src="/cross-site/baz.com/frame_tree/page_with_editable_elements.html" width=500
    height=300 />
  </body>
</html>